Short answer: the KEF Q Concerto Meta. It ranks #11 of 222 bookshelf speakers by sound quality, rated 4.6/5, at $999.99; the SVS Ultra Evolution Bookshelf ranks #78, rated 4.0/5, and costs $1,199, so there is little reason to consider the other one.
What the SVS Ultra Evolution Bookshelf does well: A two way bookshelf speaker with a diamond coated tweeter and deep rated bass for its size, easy to drive with most amps. The tradeoff: Measured by Stereophile and Audioholics, but not in the Spinorama format used for this ranking, so its tonal balance and directivity can’t yet be compared directly with ranked speakers.
The KEF Q Concerto Meta is the better-sounding choice. A neutral three way bookshelf speaker that sounds consistent from seat to seat, with smooth treble that many rivals at its price lack. The catch: Radiation pattern measures about ±50°, narrower than the reviewer’s preferred ±60° for a stronger sense of envelopment.
Buy the KEF Q Concerto Meta. It is rated higher for sound quality than the SVS Ultra Evolution Bookshelf and costs less, so it is the default pick unless a specific strength of the other one matters more to you.
Worth knowing: the SVS Ultra Evolution Bookshelf has not been measured yet. Its rating is estimated from related models, with a likely range of 3.8 to 4.2, so treat this verdict as provisional.
Still deciding? The full Passive Home rankings cover every ranked option.
Measured Differences
- Efficiency: the SVS Ultra Evolution Bookshelf is rated at 87 dB sensitivity against 84.2 dB for the KEF Q Concerto Meta, so it plays as loud with roughly two thirds of the amplifier power.
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Specifications Side By Side
| SVS Ultra Evolution Bookshelf | KEF Q Concerto Meta | |
|---|---|---|
| Price | $1,199.00 per pair | $999.99 per pair |
| Ranked | #78 of 222 in Large Size Bookshelf Speakers Estimated | #11 of 222 in Large Size Bookshelf Speakers |
| Drivers | 6.5” composite glass fiber cone woofer, 1” diamond-coated aluminum dome tweeter | 165 mm (6.5 in.) hybrid aluminium cone woofer, 100 mm (4 in.) aluminium cone midrange, 19 mm (0.75 in.) vented aluminium dome with MAT tweeter |
| Frequency Response | 40Hz-40kHz ±3dB (manufacturer specified) | - |
| Sensitivity | 87dB (2.83V/1m, manufacturer specified) | 84.2dB (measured average, Erin’s Audio Corner) |
| Impedance | 6 ohms nominal (manufacturer specified) | 4 ohms nominal (3.3 ohms minimum above 80Hz, measured by Erin’s Audio Corner) |
| Woofer Cabinet | ported, rear | ported, rear |
| Dimensions | 14.9”H x 8.7”W x 11.3”D (378 x 220 x 286 mm) | 16.3”H x 8.3”W x 12.4”D (414 x 210.8 x 315 mm) |
| Weight | 19 lbs (8.6 kg) each | 20.9 lbs (9.5 kg) each |
| Cabinet Color | piano gloss black, piano gloss white, black oak | - |
| Country | United States | - |
| Bass Extension (-10dB) | - | 35Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | - | 53Hz (measured, Erin’s Audio Corner) |
| Spinorama Preference Score | - | 6.01 |
| Spinorama Preference Score with Perfect Sub | - | 7.71 |
| DIY Kit | - | No |
Where the Ratings Come From
- SVS Ultra Evolution Bookshelf: reviews by Stereophile and Audioholics.
- KEF Q Concerto Meta: Spinorama.org measurements and reviews by Erin’s Audio Corner.
This comparison is generated from the ratings, specifications and measurements on each product’s own page, and it updates when that data changes. How we rank explains how each rating is decided.
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